package com.hhxy.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.hhxy.domain.LoginUser;
import com.hhxy.domain.User;
import com.hhxy.mapper.MenuMapper;
import com.hhxy.mapper.UserMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Objects;

/**
 * @author ghp
 * @date 2023/3/7
 * @title
 * @description 自定义UserDetailsServiceImpl, 让SpringSecurity能够查询数据库中的密码, 默认的UserDetails是从内存(Session)中查询的
 */
@Service
public class UserDetailsServiceImpl implements UserDetailsService {

    @Autowired
    private MenuMapper menuMapper;

    @Autowired
    private UserMapper userMapper;

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        // 根据用户名查询用户信息
        LambdaQueryWrapper<User> wrapper = new LambdaQueryWrapper<>();
        wrapper.eq(User::getUserName, username);
        User user = userMapper.selectOne(wrapper);
        // 如果查询不到数据就通过抛出异常来给出提示
        if (Objects.isNull(user)) {
            throw new RuntimeException("用户名或密码错误");
        }

        // 根据用户查询权限信息 添加到LoginUser中
        List<String> list = menuMapper.selectPermsByUserId(user.getId());

        // 封装成UserDetails对象返回
        return new LoginUser(user, list);
    }
}